GDS Flights
Glossary
The most important definitions.

Global Distribution System (GDS)

Amadeus

Sabre

Travelport

Passenger Name Record (PNR)

International Air Transport Association (IATA)

Computer Reservation System (CRS)

Inventory Management

Fare Classes

Code-sharing

Electronic Ticket (e-ticket)

Direct Connect

Application Programming Interface (API)

New Distribution Capability (NDC)

Billing and Settlement Plan (BSP)

Rate Parity

Yield Management

Dynamic Packaging

Meta-search Engines

Online Travel Agency (OTA)

Blockchain in Travel

Virtual Interlining